What Is an ISATAP Adapter?

What Is an ISATAP Adapter?

An ISATAP adapter is a piece of software designed to help organizations transition from the older 32-bit Internet Protocol address infrastructure to the newer 128-bit IP system. Most users will never need or encounter this adapter. Some users with Windows Vista or Windows Server 2008-based computers may experience an error in which the adapter appears as a non-functioning device in Windows Device Manager. In the majority of cases, you can safely disable this device.

Read more: http://www.ehow.com/info_12172962_isatap-adapter.html#ixzz2hhpb9cCL

To check the ISATAP status in the server:

netsh int isa show state

Disable Tunnel adapter isatap virtual adapters

Use “netsh int isa set state disabled” command to disable ISATAP adapters
After you run this command check with ipconfig command
Disable All IpV6 components using Registry (http://support.microsoft.com/kb/929852)
Under [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\TCPIP6\Parameters] create new Hexadecimal DWORD key as ”DisabledComponents”=dword:ffffffff

http://support.microsoft.com/kb/929852/en-us

The Microsoft ISATAP device Inter Site Automatic Tunneling Address Protocol is used to help enterprises transition to an IPv6 infrastructure. The ISATAP adapter encapsulates IPv6 packets by using an IPv4 header. This functionality enables the client to transport IPv6 traffic over an IPv4 infrastructure. This approach lets organizations slowly migrate to an IPv6 infrastructure without having to spend excessive time and financial resources to convert to the new infrastructure.